Abstract
Hybrid Laser-Arc Welding (HLAW) technique is an enabler for the next generation high efficiency we lding, bu t in dustrial ad option ha s be en li mited du e to pr ocess complexity. Previously documented challenges with root cracks posed by incomplete penetration were significant; h owever, t his w ork p resents s uccessful w eld s amples p repared f rom S 690QL steel welded from two sides with a 16 kW disc laser. Weld travel speeds below 500 mm/min and weld line energies between 1.7 and 1.9 kJ/mm gave sound weld samples, evaluated for yield strength, elongation, hardness and Charpy-V toughness according to DS/EN ISO 10025-6:2004+A1. The results shown here indicate a significant i ncrease i n t he overall e fficiency of but t wel ds in high strength steels and further cement the HLAW process for high strength steels. It is shown that the consecutive nature of the weld procedure led to non-negligible interpass temperatures for the second weld.
Originalsprog | Engelsk |
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Tidsskrift | IOP Conference Series: Materials Science and Engineering |
Antal sider | 9 |
ISSN | 1757-8981 |
DOI | |
Status | Udgivet - 1 nov. 2021 |
Begivenhed | 18th Nordic Laser Materials Processing Conference - Luleå, Sverige Varighed: 18 jan. 2022 → 20 jan. 2022 |
Konference
Konference | 18th Nordic Laser Materials Processing Conference |
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Land/Område | Sverige |
By | Luleå |
Periode | 18/01/2022 → 20/01/2022 |